One of mine is from WELCOME TO THE MAGIC WEIGHTED BLANKET (Note they do not use beans and do not buy one with beans as it will get moldy). That one is flannel and it isn't the softest flannel but it's ok. It is 10 lbs and I use it for travel and IP stays. It happens to be a twin; they custom make and I'd recommend choosing a soft fabric. I don't remember the price.

My main one is from a place that went out of business. It is full-sized and made of Minkee dot fabric which is very soft. It was about $225 including shipping 12 years ago.